Rotary engine.



0. AKER'BERG. ROTARY ENGINE.

APPLICATION FILED .APR. l1.v 1905.

PATENTED OCT. 9,. 1906.

5 SHEETS-SHEET 1 PAIENTED OCT. 9, 1906.

v No.- 833,107.

' 0. AKERBERG. ROTARY ENGINE. APPLICATION FILED APR 11- 19%.

n l w .r 4 a k w 4/ 4 2 8 an PATENTED OUT. 9, 1906.

- ,0. AKERBBRG. ROTARY ENGINE. APPLICATION FILED APR. 11,1905.

' 6 BHEETS-SHEET 5 cordance with the present invention.

UNITED sTA rns PATENT OFFICE.

Specification of Letters Patent.

Patented Oct. 9, 1906.

Application filed April 11 1906. Serial No- 254=,91Z.

To all whom it may concern/.

Be it known that I, OLOF AKERBERG, a citizen of the United States, residing at Everett, in the county of Snohomish and State of Washington, have invented certain new and useful Improvements in Rotary Engines; and I do hereby declare the following to be a full, clear, and exact descri tion of the invention, such as will enable ot ers skilled in the art to which it appertains to make and use the same.

This invention relates to certain new and useful improvements in rotary engines.

One of the numerous objects in view is the improvement of the general construction of an engine which maybe operated by means of the expansion of steam, gas, or compressed air.

Another object of the, invention is the improvement of the construction of a rotary piston, a casing inclosing the same, and valve means coacting with said pistons.

A still further object of the invention is the production of a mechanism which comprises a minimum number of arts and which is durable and comparative y inexpensive in construction and, eflici'ent in operation.

While I have mentioned some of the'objects of the invention, the same includes certain other novel constructions, combinations, and arrangements of parts, as will be hereinafter fully described, illustrated in the accompanying drawings, and more particularly pointed out in the claims hereto appended.

In the drawings, Figure 1 is a view in front elevation of a mechanism constructed in ac- Fi 2 is a view in side elevation of the mechani sm shown inFig. 1, partly illustrated in vertical section. Fig. 2 is a horizontal sectional view of the guiding-rod, to which is secured the expansible receptacle. Fig. 3 is a fragmentary transverse sectional view of the mechanism illustrated in Fig. 1. Fig.4 is a fragmentary longitudinal sectional view of another embodiment of my invention. Fig. 5 is a fragmentaryview, in sideelevation, of anotherembodiment of-the present invention, partly shown in longitudinal vertical section. Fig. 6 is a view in side elevation of another embodiment of the invention, partly shown in section. Fig. 7 is a horizontal sectionalview taken on line 7 7, Fig. 2'.

Referring to the drawings by numerals, 1

of the standards 1..

designates stationary standards which are provided for supporting the double cylindrical casing 2. The cylindrical casing-2 is provided with laterally-extending lugs 3, which are positioned u on theupper portion T 1e casing 2 is provided with double walls, forming a compartment 4. The compartment 4, forms a receptacle within which water or any suitable cooling means may be stored. I

Extending upon one side of each of the casings 2 is a journal-box A driveshaft 6 is journaled centrally within the casings, and within each of the casin s 2 and secured to the shaft 6 is a revoluble piston-carrier 7. The piston-carrier 7 is provided with a pair of pistons 8. Said pistons 8 are provided upon each side with integral webs or extensions 9 9, which constitute cams for-raising the movable abutments 10, which are pivotally mounted within the casing 22 and secured to shafts 11. The shafts '11 are each provided exteriorly of their respective casings with a crank-arm 12.

The movable shoes or oscillatory abutments 10 are each positioned within an enlarged portion 12, formed upon the casing 2 at diametrically opposite points. It will be seen upon referring "to Fig. 3 that the pis tons 8 are substantially rectangular in shape, and they are integrally connected to the hub portion of. the piston-carrier by means of a reduced portion 18. The inner wall of each of the casings is provided with an integral annular extension 14 upon each side thereof, which is normally engaged by a movable packing 15, positioned within the grooves of the reduced extension 13 of the piston-carrier upon eachsid'e thereof. The packings 15 are held against the annular extensions 14 of each of the casings by means of springs 16. Upon the wall-engaging surfaces of each of the pistons 8 there are formed grooves, within which are positioned movable packings 17 and 18. The packings 17 and 1b are held against the inner wall by means of springs 19. Each abutment 10 is provided upon its sides with curved ribs 10", constituting packings, which packings engage the sides of the pri' mary casing of the engine. In the present instance 1 have shown two of the casings 2 secured together, each casing being formed upon one side with an annular recess 20, which communicates with'the compartment 4, formed by the inner and outer walls of the casing 2 \N'hen the two casings are secured together, there is formed a comparatively large compartment produced by the recessed portions of said casings, as will be clearly seen upon referring to Fig. 3. The annular recessed portion 21 is formed upon the inner face of the hub portion 5, which may be filled with a suitable'lubricant for lubricating the revoluble .shaft 6.

' A pair of cylindrical compartments are formed upon the upper portion of each of the 26 is secured to the extension of each of the valves 22. \Vhile the end 24 of the valves 22 is closed by the integral extension and the recessed receptacles 31.

and one of the or oscillatory a utments 10, which are mov- 25, the opposite end is opened for permitting the passage of steam, gas, or air through said valve from the inlet-pipe 27. The inlet-pipes 27 in the embodiment disclosed in Figs. 1 to 4 communicate with the .intermediate storage- A port 29 is formed in the casing 2 near each of the valve-compartments for providing communication between the hollow portion of each of the valves 22 portion 30 of themovable abutments 10. When one of the openings 23 of the movable valve 22 registers with the transverse opening constituting the port 29, direct communication is had beteween the inlet-pipe and the compartment formed in the casing between the movable abutment 10 istons 8. Each of the shoes ably mounted upon the casingfis provided with paekings 17, which are employed for making tight oints or connection between the inner wall of the respective casing and said abutment. It will be noted'that the recessed portion 30 is not of the same lengthas the width. of the face of said abutment in order that when the abutment is moved to the position clearly shown in Figs. 2, 4, and 5 communication between the valve 22 and the compartment formed between the face of the abutment 10 and one of the pistons may be obstructed by a portion of said abutment.

Referring more particularly to Fig. 2, it will be seen that there is positioned upon the primary casing 2 an intermediate storage or auxiliary receptacle creasing 31, within whichis secured a movable sack The sack 32 comprises in its construction a'flexi- I ble casing 33, to which is secured upon the upper portion thereof an apertured metallic plate 34. The apertured portion of said metallic plate is closed by a [lap-valve 35. Thelower. portion of the flexible sack is fixedly secured to the bottom portion of the casing 31. The llexible'sack may be formed of rubcasing per, silk, or any analogous material which will permit of the expansion and contraction of said sack.

The intermediate receiving or fuel receptacle 31 is provided with an aperture 36, which is normally closed by a flap-valve 37. The receptacle 31 is connected with any suit able reservoir by means of a valved tubing The valve member 39 of said tubing-'38 is provided for regulating the supply of liquid, which is preferably gasolene, to the casing 2 through the inlet-pipes 27.

By adjusting the valve member'41 the size of the opening at the bottom of compartment or by-pass 40 may be controlled. If the valve member 4]. is nearly removed from 31, the passage of gas from within the expansible receptacle through by-pass 40into the compartment in receptacle 31 will not be obstructed. The adjusting of valve member 40 will consequently control the amount of gas which is passed into the explosive chambers of the engine through the medium of either of the pipes 27 The inlet-pipes 27 communicate with the compartment formed in the casing 32 through the aperture 42 of the casing 31. For preventing gas from being forced back into the chamber 32 after the same has been forced into the inlet-pipes 27 I provide flapvalves, as is, for instance, shown at 27. The flap-valves swing downwardly and are held in position normally by any suitable means as, for instance, the spring 27.

A hollow vertically-movable rod 43 is j ournaled in the casing 31 and is connected to the valve-actuating mechanism carried by the casing. The vertical movable rod 43 is provided with a plurality of apertures 44. and ribs 44, which permit of the passage of a suitable lubricant from the compartment formed by the hollow structure of said rod to the eX- terior surface ofthe rod 43. The metallic plate, 34 is secured to the rod 43. When reciprocatory movement is imparted to the rod'43 through the medium of the valveactuating mechanism the flexible casing will be alternately expanded and contracted. Oil is supplied to the auxiliary casing 31 through the pipe 38, as well as atmosphere through the valved aperture 36. The oil and atmosphere contained in the auxiliary cas ing are permitted to pass into the casing 32 as the same moves to the position shown .in broken lines, Fig. 2, as the flap-valve will not be retained .in the position indicated in said figure when the casing 32 is being expanded by upward movement of rod 43.

o parkings 49 and 50.

45 recesses 52 to plished by adjusting the valve member 41.

ll the valve member 41 is o enedto its greatest extent, as the expansilile casing 32 is contracted a large amount of the gas convtained therein will be forced through the compartmmit or by-pass intothe compartment formed by the casing 31 exteriorly ol' the expansible casing 32. The ,valveactuating mechanism which imparts movement to the rod 43 in timed relation to the 2b movement of the valve will be hereinafter specifically described. I

The movement of the engine in one direction can be easily reversed by moving a lever 46, which is movably mounted upon an 25 integral extension 47, formed upon one side of the casing 2. Thesides of the casing 2 comprise removable lates, which are retained in their norma osition by means of a series of transverse bo l the sides and-between the inner and outer walls of the casing within the compartment 4. By reason of this sectional structureof the casing it is exceedingly simple to remove 3 5 the sides ofthe casing or cylinder if it is desired to examine or'repair any of the mechanism inclosed by the casing 2. Upon each side of the transverse aperture constituting the port 29 are positioned s ring-pressed The pac ing is removably positioned in its respective recess or groove by means of a screw 51. v A recess or transverse grooved portion 52 is formed in the casing near each oi the valves 22. These are provided for receiving the integral extensions 53 of the abutments 10 when each of said abutments is moved within the bulged portion 12' of the casing 2, as is shown in the right-hand side of Fig. 4, for

50 permitting of the free movement of the pistons 8.

Each of the bulged portions 12 of the casings is provided upon its upper portion with a removable standard or support 54.

5 livotallv mounted u )on the u) er end of 5 l IP each of the standards 54 is a movable arm or bar 55. 'l he bar 55 is provided with an elongated slot .36 and with anintegral lateral extension :37. A link 58 connects the crank 6c member 12 and the movable bar 55 throu h the medium of the lateral extension'57 and the similar extension 59, which is formed.

upon crank l2. When movement is imparted to the crank member 12, similar 65 movement of the arm 5:) will be caused.' A

ts 48. The bolts 48 0 extend through apertured portions formed in parallel movable arm 60, which is provided with a lateral extension 61, is supported upon the pivotally-mounted arm 55. The parallel member 60 is provided with a bifurcated end 62. The bifurcated or notched end 62 of the bar or parallel member 60 provides means whereby the same may be removably secured to the pin or lateral extension 63 of the vertically-movable rod 43. The movable arms or bars 60 are each provided with an arm 64, to which the lever 46 may be secured when the same is swung to a vertical position.

,Referring particularly to Fig. 7, it will be seen that the arm 64 is positioned upon the extension 61, which is preferably a bolt or rivet, and said arm 64 is capable of being secured in a longitudinal adjusted position by positioning one of its notched portions 64 uponthe pin 64", carried by the standard 54. By unhooking the arm 64 the member 60 may be adjusted longitudinally for either connecting or disconnecting the same with the stud or lateral extension 63 of member 43.

A coiled spring 65 is secured at one end to the shaft 11, and its opposite end engages a portion of shaft 47. The spring normally exerts downward pressure 11 on the crank member 12 for holding the a utment 10 in an operative position. The inner end of each of the levers 46 is provided with an antifriction-roller 66, which engages the lower surface of one of the crank members 12. As soon as the lever 46 is moved to a vertical position the crank member 12 will be swung down, causin the abutment carried by the shaft 11, to w ich the respective crank member is secured, to be moved downwardly within the casing 2. During part of the travel of said abutment the recessed portion 30, throu h the medium of the port 29,will provide (Erect communication etween the inlet-pipe 27 and the cylinder through the valve member 22 by reason of the fact tha' one of the ports 23 of said valve will regi ter with the port 29. Before the abutment 1() has been moved to its lowest position within the casing 2 the port 29 is closed, and subsequently the piston passes the exhaust-port- 67, permitting of the gas to be exhausted to the outer atmosphere.

The ratchet-wheel 26is retained against movement in one direction by means of the pawl 68. Pawls 69 and 70 are mounted upon the link'58, and a spring 71, which is provided with two angular ends, is mounted u on the link member-58 and engages each action of spring 65, the abutment will pivot downwardlyiby means of its own weight, and spring and pawl will impart rotary movement to the ratchet-wheel 26 and thereby rotate valve 22;, ports 23 to register with the port 29, permitting-of thepassage of gasinto the casing 2,

between the face of the abutment 10 and one of I the pistons. Asthe abutment continues its downward movement pawl 69 will rotate the valve 22 and close. port 29. Synchronously with the closing of, the port 29 pawl will engage one of the movable arms 77, causing said arms to close together, closmg the clrcuit at points 78 and through the medium of elec-- trical means 79 a'nd80 the gas contained in the casing 2 will be ignited. Specific ,de-

scription of the sparking plug is not neces:

. sary, as I do not make any specific claim to the structure of said plug and electrical means coacting with the movable spring-pressed arms 77, as this structure is known to vthe lugs are carried by the 'art. The substantially U-shaped' member 81, provided with outward resilient arms, normally retains the members 77 apart.

causing one of the Outward movement of arms 77 is limited byv means of lugs 79, constituting stops. These tiguouslto the arms 77.

The embodiment shown in Fig 4. is verysim lar in most of the details to the structure.

shownin Figs. 1, 2, and 3, thedifierence in primary casing con-.1

the Structureshown in Fig. 4 beinginthe.

expansible receptacle-containing casing 82.

The integral threaded extension 83o);-

tends upwardly from each of the bulged por-.

tions 12. Said integral extension 83 is proing 82.

vided witha central aperture An expansie ble receptacle 84 is positioned within the cas- The chamber 84, formed within the receptacle 84, may be placed in communication with the compartment of the bulged portion 12 of the casing 2 by rneans'of. the apertured structure of the extension 83. The

casing 82 is provided-with ports 85. Valved inlet-pipe38 permitsv oil to be supplied to the interior of the receptacle 84. f

In the embodiment illustrated in Fig. 2 through the medium of the rod or member 43 the expansible receptacle is compressed for forcing the gas through the inlet-pipe into the casing; but in the embodiment depicted in Fig. 4 I preferably employ the spring 84. Atmosphere is introduced into the receptacle 84 from the compartment 86, formed in.

the bulged portion 12. Atmosphere is introduced into the compartment 86 through a port closed by valve 86. A flap-valve similarly constructed to valve 86* closes the upper end of the apertured portion 87. A recess 86 is formed'upon one side of the abutment 10 for receiving the :flap-v alve 86 when the abutment is in the position shown on the right in Fig. 4. An inlet-pipe 27 provides direct communication between rotary valve 22 and the interior of the expansible receptacle, 84. As the abutment moves downwardly air is drawn into the compartment 86, and subsequently .as said abutment moves upwardly the atmosphere contained in this compartment is forced into theexpansible receptacle 84. The valve member 41 controls the supply of liquid through pipe-.38. toreceptacle 84w In. Fig. 2 I have shown a valve member 39 for, controlling the supply of gasolene to the explosive chamber, while in Fig. 4 a valve member 41. is 'e1nployed for, a similar purpose; In the struc- -,ture depicted'in Fig. 4 the port or channel 41? is not placed in communication with receptacle 84jfor allowing of the exhaust of air therein; but in, this instance the air;- is exhausted into the outer atmosphere.

When it is desired to employ steam as the motive power for operating the engine, it will only be necessary to remove a few-of the parts, as illustrated in Fig. 5-. l Instead of theinletpipes 27 ,whichare employed for.intro-- ducing gas into the engine, steam-pipes 88 are connected with the valves 22, the pawl 70 being, removed from the link 58 and the ex haust-port 67 being closed by means of a removablefcap 89. .The exhaust of :thedead steam to the outer. atmosphere is permitted through the exhaust-port 90. After ,the lever 46 has been moved to its vertical position and the ratchet-wheel 26 revolves for opening the port 29 live steam from the inlet-- pipe 88 will be dischargedv into the cylinder of'the casing 2 against one of. the abut-merits for imparting movement to the rotary piston.

As the piston revolves and comes incontact with the lower face of the abutment. 10, and raises the same the crank-arm 12 will alsobe swung on its pivot, and tllpfiwh?2 when traveling upwardly to the position shown in Fig. 5 will come in contact with the ratchet-wheel 126 and close the port.- In other words, pawl 69 is used for opening the port, whilefpawl 72 is the means torclosing the same. Of course arms.7 7 and the pawl 75 shown are not employed when .using steam as the motive power for actuating the piston.

- Instead ofemploying the exhaust-ports 67 exhaust port is employed The exhaust port 90 is in communication with ports or channels 91, 92, and 93. Gas or steaminay be discharged into'the chamber or compartment 86 of the bulged portion 12 or through channels 91 and 93. It will be seen that the discharged into the compartment 86 to remove any resistance, below the abutment. When the abutment'has moved to its lowest position, the port or passage 92.will be closed and passage 90opened topermit of the remaining dead steam to pass into the outer atmosphere, the object ofthis structure being the saving of steam or gas, as the case I I will specifically describe.

may be.

In Fig. 6 I have illustrated another embodiment of the invention which is particularly'adapted for employing steam as a motive power. While the casing in this instance is not provided with double walls, the 5 general structure is similar to the other embodiments; but there are some details which I willv only describe the structure of one of the valves and its coacting mechanism, as the valves and their coacting mechanisms are duplicates.

A steam-pipe 88 communicates with the interior of the rotary valve 22. The rotary valve 22 is provided with a single port 26. In this embodiment, in place of the ratchetwheel 26, I employ a member 97, which is fixedly secured to the extension98 of the valve 22. Formed upon the'shank 12 is an extension 99, which is adapted to engage the tooth 100, formed upon member 97, for causing the port 96 in the rotary valve 22 to register with the port 29 for permitting of the passage of steam into the cylinder. In assuming its uppermost position the crank 12, through the medium of the spring-pressed pawl 101, will engage the extension 102 of member 97 and close the port 29. If it is desired to close the port 29 before the crank has moved to its lowest positiony-thi'smay be-accomplished by positioningthe removable toothed member 103 upon said crank. The tooth or member 103 is adapted to engage the tooth 100 of member-97. It will be seen that upon slight movement. of the crank 12, through the medium of tooth 100 and the tooth formed upon member 103, that port 29 will be closed. Upon the shaft 6 and outside of the journalbox 5 is movably secured a ring 1041, which is provided with extensions 105, carrying inweirdly-projecting pins 106. Upon the extension 107, which is secured to the end of the casing, I position a swinging arm 108. The

lower end ofthe arm 108 is engaged by the extensions 106 to turn said arm on its pivot.

At each half-revolution of the shaft 6 one of the extensions 106 will engage the lower end of the arm 108 and force one of the slidable; pins 109 longitudinally within the fixed boxes 110. Each of the pins 109 is .adaptedto' engage the tooth 100 of member 97 for'moving member 97 and causing the port 96 of valve member 22 to register with the port 29.

g A spring 111 is fixedly secured, hy'means of an annulus 112, to the extension 107. The upper free end of thespring 111 is positioned between two studs or extensions 11.3, carried byswinging arm 108. The object of the spring 11] is-to return the arm 108 to its normal vertical position after movement therement against said piston-carrier as said abut ment engages the same.

In this specification I have described specifically the structure of one of .the abutmcnts 10 and its coacting mechanism.

It will be obvious from the foregoing description that each of the casings and the mechanism carried thereby constitute a separate engine and that in each of the engines there is employed two of the abutments and their coacting mechanism for permitting the engine to be reversed.

It would be superfluous to specifically describe the mechanism upon each end of the engine in each embodiment, as they are similar in structureand operate in the same manner.

Apertures 94 are formed in the sides of the casing for permitting the piston to be lubri cated.

Any number of the engines may be connected to a single drive-shaft.

Referring particularly to the embodiment depicted in Figs. 1 to 3, when one of the levers 46 is moved outwardly, thereby raising the crank-arm 12 to the position shown in Fig. 2, this'will permit the engine to operate in one direction, while upon swinging the same lever upwardly to a substantially vertical position, thereby permitting the crankarm 12 to be loweredand at the same time lowering the other lever 46, so as to raise its cranloarm 12 and abutment 10, the engine will be permitted to operate in a reverse direction to that of its first movement. This is true of the mechanism in all'of the em-. bodiments. In other words, when one of the crank-arms is raised through the means of a lever the other crank arm should be lowered, as it is absolutely necessary that one of. the abutments should be in an operative position, while the other abutment is in an inoperative position. An abutment is in an operative position when in engagement with thepiston-carrier, as clearly depicted inFig. 2. An abutment is in an inoperative positio'r when positioned entirely within one of h'eqoulged portions of the casing, as, for instance. Willbeclearly seen upon referring to Fig. 4-, As the piston-carrier revolves the abutment 10, which is in the path of movement of the pistons 8, will be swung from the position shown in Fig. 2 into the bulged portion of the casing, and as said niston passes the abutment the same will swing. back into its engaging position with the piston-carrier. Therefore it will be seen that if its cranloarm 12 is suitably connected to the vertically-movable rod 43 movement will be imparted to said rod, which, owing to the fact that plate 34 of the expansible receptacle B2 is fixedly secured to said rod,will

5 cause expansion and contraction of said receptacle. The means for connecting each of the crank-arn'is 12 with the vertical slidable rod 43, through the medium of the lug or extension 63, comprises links 58, bars 55, and r0 movable arms 60. When one of the arms 60 is shoved against the lug or extension 63, said lug is positioned within the bifurcated portion 62 of the arm 60. When the link'58 is moved vertically, the arm 60 will move the 15 rod 43, thereby 0 )erating the expansible receptacle. One 0 the valves 22 will be synchronously moved when one of the crankarms 12 is actuated by means hereinbefore described. This synchronous movement of the valve22 opens and closes the ports in time relation with the movement of the piston-carrier and its pistons, so that gas or steam, whichever maybe employed for driv ing the piston-carrier and pistons, will be 25 permitted to pass through the ports into the chamber formed within the primary casing,

Having thus fully described my invention,

what I claim as new,and desireto secure by Letters Patent, is

0 1. In a mechanism of the class described, the combination of a double-walled, primary casing, a rotatable piston mounted within said casing, said casing provided with bulged portions, an oscillatory abutment positioned -3 5 within each of the bulged portions of said casing a rotatable valve .journaled in said casing near each of the bulged portions, an auxiliary casing secure( to said primary casing, an expansible receptacle contained with- +o-in said auxiliary casing, means connecting said Valves and auxiliary casing providing communication between the interior of said expansible receptacle and the primary casing, and an actuating mechanism coacting with said expansible receptacle, valves, and

abutments.

2. In a mechanism of the class described, the combination with a primary casing, of a revoluble piston mounted within said casing,

oscillatory abutments carried by said casing,

valve means formed upon said casing contiguous to each of said abutments, an expansible receptacle carried by said casing, and means for supplying gas from said receptacle 5 5 tothe-valve means, when said receptacle is compressed, an actuating mechanism coacting with each of said valves and abutments and with said expansible receptacle, said vmechanism comprising a crank-arm secured a: to said abutment, a vertically-movable rod connected to said expansible receptacle, and

'removable means connecting said rod to said crank-arm.

3. In a mechanism of the class described, the combination with a cas ng, and a revolus33,1o7 l ble piston mounted therein, of oscillatory] abutments journaled in said casing, an expansible receptacle carried by said casing, means connecting said expansible receptacle to said casing and providing direct commu- 7o nication between the interior of said receptacle and casing, and means for expanding and contracting said receptacle, comprising a crank-arm secured to an abutment, a movable link secured to said crank-arm, a pivotal arm secured to said casing and connected to said link, an adjustable arm carried by said pivotal arm, a vertically-1novable rod secured to said expansible receptacle, means for connecting said-rod to said adjustable 8n arm.

4.. In a mechanism of the class described, the combination with a primary casin of a piston mounted within the same, oscillatory abutments journaled in said casing, an auxiliary casing mounted above said primary casing, an expansible receptacle contained within said auxiliary casing, a revoluble valve journaled in said casing near each of said abutments, tubin connected to said auxiliary receptacle and primary casing and providing direct communication between the interior of said expansible receptacle and valve, an actuating mechanism for each of said valves and coacting with said expansible receptacles, comprising a crank-arm on an abutment, a link secured to said crank-arm,

a hollow rod connected to said expansible receptacle, said rod having an aperture formed therein, an extension-formed inte- 10o grally upon said rod, an adjustable means engaging said extension and assembled with said link."

5. In a mechanism of the'class described, the combination with a primary casing, a revoluble piston mounted within said casing, valve means carried by said casin and coacting with said piston, of an auxi iary casing carried by said primary casing, an expansible receptacle mounted within said aux- I I0 iliary casing, a mechanism connected with said valve means and expansible receptacle and capable of synchronously actuating said valve and moving said receptacle, said mechanism comprising a crank member, a spring :15 secured to said crank memberand normally exerting downward pressure upon the same, and link means connected to said crank member and expansible casing.

6. In a mechanism of the class described, the combination with a casing, of a revoluble piston mounted therein, said casin provided with bulged ortions, an osciIlatory abutment positions within each of said bulged portions, valve means formed upon I25 said casing contiguousto each of said abutments, means for actuating said abutments and valves in timed relation, an expansible receptacle carried by said casing and communicating With'the valve gneans, and means 1 0 for compressing the contents'of said expan: sible receptacle' I 7. In a mechanismof. the class described,

the combination with a primaryand an auxiliary casing, a piston mountedwithin, said primary casing, an expansible receptacle positioned within said auxilia casing, oscilatory abutments journaled within said cas ing,;a"revolub1e valve journaled within said casing contiguous to each of said abutments,

and tubing connecting said valves and expansible receptacle, means for controlling the pressure in the expansible receptacle,

when the same is compressed, valved 'means for supplying liquidand atmos here to said auxiliary casing, a mechanism or actuating one of said valves, and expansible receptacle,

, comprising a pivotally-mounted lever,- a

bearing journaled upon one end ofsaid lever, a crank member secured to said abutment, a ratchet-wheel secured to said valve, a pawl engaging said ratchetwheel, a link member secured tosaid crank-arm, pawls carried by said link member, cushioning means engaging said pawls, a standard secured to said primary casing, an arm pivoted to said standard, means connecting said' arm and link, an adjustable, bifurcated member secured to sa1d arm, a hollow; perforated rod .sq

provided with guiding-ribs, secured to said expansible receptacle, said rod provided with an integral extension formed near its lower end, said extension adapted to be ositioned 'within'the bifurcated portion of t e adjustable member, and means for removably securing said lever to said adjustable member.

' 8. In a mechanism of the class described, the. combinationwith a primary casing, of a revoluble-piston mounted therein, an auxiliary aperturcdcasing positioned upon said primary casing, valve means carried by said primary '-cas1ng, connecting means for said valve means and auxiliary casing, said auxiliary casing provided with valved means for permitting atmosphere to be su plied to the interior. thereof, an expansib e receptacle positioned within said auxiliary casing,

valve means for controlling pressure Within .and extending inwardly, a shaft journaled in said casing, a piston-carrier secured tosaid shaft, said piston-carrier provided with p1stons, flanges, OOIlStltlltlIlgflaIIlS, 'secured to said piston-carrier and pistons, packing 'means positioned upon the edges of said pis-g tons, osclllator abutments journaled in said" casing, a revo uble valve journaled in said rier, said portion, pistons extending from said hub casing contiguous to each of said abutments, \means for supplying gas to saidvalve and casing, and lever and link means for controlling movement of each of said abutments and valves. I a

' 10. In a mechanism of the class described,

the combination with a casing, a revoluble piston positioned within said casing, oscilatory abutments secured in op ,osite parts of said casing, a pair of revo uble valves" journaled upon said casing, an expansible receptacle carried by said casing, and link and lever means carried by said casing and.

coacting with said oscillatory abutment-s,

valves and the expansible receptacle for controlling'mo vement thereof.

11. In amechanism of the class described,

the combination of a double-walled casing, said casing provided with bulged portions, an oscillatory abutment secured within each of said bulged 'ortions, a revoluble valve journaled in sai casing contiguous to each of said abutments, a revoluble piston-carpiston-carrier comprising a hub ortion, flanges, constituting cams, extending upon opposite sides of saidpistons, standards extending from said, casing, a movable arm secured to each of said standards, a crank member secured'toeach of said abut.- ments, a link connecting each of said arms and crank members, a springpressed pawl secured to each of said links, a I&t(3l16t Whe8l secured to each of said valves, levers secured tosaid casing, and a spring carried byt said casing and engaging eac of said crankmembers and levers.

12. In a mechanism of the class described,

the combination of a double-walled casingprovided with'removable sides, a revoluble piston journaled in said casing,; a-pair of oscillatory abutments journaled in said casing, a pair of re volublevalve membersjournaled in said casing contiguous to said abut ments, a pair of mechanisms for actuating said abutments and valve members,geach of said mechanisms comprising a lever, a crank member secured to an abutment, a ratchetwheel secured to the 78116 member, a pawl carried by said crank member, a link 'se-,

cured to said crank member, and a pawl carried by said link..

13. In a mechanism of the class described, the combination with a casing, a revoluble piston mounted within said casing, of a pair of oscillatory abu-t'ments journaled in said casing contiguous to said abutments, valves journaled in said casing contiguous to said abutments, pawl-and-ratchet means assembled with each of said valved and crank members for controlling movement thereof,

and levers normally in. engagement with said crank members and capable of controlling movement of the abutments and valve members for reversing the engine.

the combination with a casing, a revoluble casing, valve means carried by said casing same to an inoperative position.

14. In a mechanism of the class described, the combination with a casing, a piston mounted therein, of oscillatory abutments journaled in said casing, valve means carried by said casing contiguous to said abutments, separate means for controlling movement of each of said abutments and valve means, and lever means coacting with said abutment and valve means and capable of controlling movement of the same for reversing move ment of the piston.

15. In a mechanism of the class described,

piston mounted within said casing, of oscillatory abutments. journaled in said" casing, valve means carried by said casing, a spring connected to each of said abutments and normally holding the same in an o erative position, and levers carried by sai, casing and coacting with said abutments for holding the same in an inoperative position.

16; In a mechanism of the class described, the combination with a casing, of a revoluble piston mounted within said casing, of a pair of oscillatory abutments journaled in said and coacting with each of said abutments, means .for controlling movement of each of said abutments and valve means, and levers secured .to said casing contiguous to said abutments and valve means for moving the 17. In a mechanism of the class described, the combination with a casing, of a piston mounted within said casing, oscillatory abutments positioned within said casing and coactlng with said piston, valve means carried by said casing,an auxiliary or fuel casing secured contiguous to said primary casin ,a flexible sack or receptacle positioned wit in said auxiliary casing, and lever-controlled, separate means connectingsaid abutments and flexible receptacle, and being capable of con-- trollin the movement of said valve means.

18. n a mechanism of the class described, the combination with a primary casing, of a piston mounted within said casing, abutments positioned within said casing and coact-' mg with said piston,'of an auxiliary or fuel casing secured contiguous to said primary casing, an expansible' receptacle positioned within said auxiliary casing, and lever-controlled means for actuating s'aid abutments and expansiblereceptacle.

19. In a mechanism of the class described, the combination with a rimary casing, a revoluble piston positioned withinsaid primary casing, oscillatory abutments positioned withm said casing, valve means carried by said casing, of crank-arms secured to said abutments, and "separate levers coacting with' said 'cranlr arms, capable of being swung for moving said crank-arms and abutments and thereby controlling movement of said valve means.

20. In a mechanism of the classdescribed, l

tioned against said piston, valve means car- 7o ried by said primary casing contiguous to each of said abutments, a crank member se cured exteriorly of said primary casing and to each abutment, means formed upon said valve means and crank member for moving said valve means when movement is imparted to said crank member, and a lever secured conti ous to each of said crank members, said evers capable of moving said crank members and abutments to an inoperative position.

21. In a mechanism of the class described, the combination with a primary casing, of a' revoluble piston positioned within said casing, of oscillatory abutments provided with 8 5 extensions positioned within said casin the extensions of said abutments being capable of engaging the revoluble piston, valve means carried by said casing contiguous to each of said abutments, a crank member fixedly se- 0 cured to each of said abutments, means carried by said valve means and crank members, for actuating said valve means when movement is imparted to said crank members, and

levers carried by said casing and coacting 5 with said crank members and thereby lifting said abutments to an inoperative position and holding the same in said position.

22. In a mechanism of the class described,

the combination with a rimary casing, of a I00 rotatable piston mounte within said casing, an oscillatory abutment ositioned within said casing, an extension formed upon said abutment, the extension of said abutment adapted to normally engage said piston,'1o5

valve means carried by sai casing contignone to said abutment, a crank member connected to said abutment, means formed upon said valve means and capable of being engaged by said crank member for imparting no movement to said valve means, and lever means earned by said casing and normally in engagement with said crank member and ca pable of moving said crank member to and holding it in an inoperative position and thereby actuating sai valve means.

23. In a mechanism of the class described, the combination with a casing, of a revoluble piston mounted within said casing, of a swinging abutment provided with an exten- 1 2c sion positioned within said casing, the extension of said abutment adapted to normally engage said piston when the mechanism-is in an operative position, a rotatable valve carried by said casing contiguous to said abut- 12g ment, said casing and valve provided with communlcatmg ports, means connected to said valve and'sald abutment and capable of actuating said valve for closing said ports I when said abutment is moved to an 1nopera- 13o tive position, and lever means carried by said casing and capable of moving said abutment to an inoperative position.

24. In a mechanism of the class described, the combination with a primary casing, a rotatable piston mounted within said casing, a swinging abutmentpositioned within said casing, a rotatable valve carried by said casing contiguous to said abutment, an auxiliary or fuel casing carried by said primary casing, means connecting said fuel and primary casings in a communicating position, a flexible, compressible receptacle ositioned within said, auxiliary casing, and lever means for controllin movement of said valve and be-' ing capab e of holding said abutment in an inoperative position.

25. In a mechanism of the class described,

the combination with a primary casing, a piston mounted within said casing, a swinging abutment positioned within said casing, a valve carried by said casing contiguous to said abutment, said valve and easing provided with communicating dports, of-means connected to said valve an said abutment and being capable of actuatin said valve for closin said orts when sai abutment is move to an inoperative position,- and lever means carried by said casing and being capable of moving said abutment to an inoperative position or permitting'said abutment to move to an operative POSltlOIl;

In testimony whereof I aflix in presence of two witnesses.

OLOF AKERBERG.

my signature Witnesses:

F. E. ANDERSON, CARL E. LUNN. 

